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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '52') AND (category.subclass = '165') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '52'; Subclass is '165';

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T / S Patent Date Description Patentee Category Assigned To
U 317,908 May 12, 1885 Electric Conductor for Wire Fence
Lightning protection for wire fence
Lightning Rod Fence  
U 538,603 April 30, 1895 Lightning Rod
Hollow lightning rod with cup to divert water into the lower sections of the rod to improve conduction of current to ground
Lightning Rod  

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